520530653 has 2 divisors, whose sum is σ = 520530654. Its totient is φ = 520530652.

The previous prime is 520530617. The next prime is 520530677. The reversal of 520530653 is 356035025.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517426009 + 3104644 = 22747^2 + 1762^2 .

It is a cyclic number.

It is not a de Polignac number, because 520530653 - 2⁶ = 520530589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520530613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260265326 + 260265327.

It is an arithmetic number, because the mean of its divisors is an integer number (260265327).

Almost surely, 2^520530653 is an apocalyptic number.

It is an amenable number.

520530653 is a deficient number, since it is larger than the sum of its proper divisors (1).

520530653 is an equidigital number, since it uses as much as digits as its factorization.

520530653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 520530653 is about 22815.1408717983. The cubic root of 520530653 is about 804.4185984901.

Adding to 520530653 its reverse (356035025), we get a palindrome (876565678).

The spelling of 520530653 in words is "five hundred twenty million, five hundred thirty thousand, six hundred fifty-three".